dfm Vs ~dfm Forms not visible

I have two forms. the associated files are
Form1 : unit1.dfm
Form3 : unit3.dfm and unit3.~dfm

I go into View -> Forms and see a listbox
with the two names Form1 and Form3.

If I click on Form3 , the form3 appears
If I click on Form1 , nothing appears.

The only difference I see in the directory is
the fact that unit3.~dfm is present and the file
unit1.~dfm is absent. What do I do to make this
necessary file? Is this problem caused by
Options->Directories choices?

I belive that *.~* files are Delphi backup files and as such they shouldn't influence your project at all.
Try renaming Form3.~dfm and see if I'm not right.
I don't know why you can't view Form1 though :(